Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d3791e4301479e1…

MALICIOUS

PDF

71.0 KB Created: 2021-02-18 15:39:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 220cde444cc98c633f86a61dd646dcfa SHA-1: fc6880689e22085491ec18ead0a88b7b9a7e0092 SHA-256: 3d3791e4301479e112242c178f7a62790e6629e34da27fd3868281b329dc0da1
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://yafferge.ru/wix?keyword=norton+shakespeare+3rd+edition+pdf In PDF document text
    • https://cdn.sqhk.co/bufutoje/w5iiUii/red_ball_3_game_video.pdfIn PDF document text
    • https://cdn.sqhk.co/jivazufevi/ijalV0I/57199943752.pdfIn PDF document text
    • http://lagimuzovixur.iblogger.org/zumebovuluko.pdfIn PDF document text
    • https://cdn.sqhk.co/mewuxedodi/fifL8fo/app_livestream_cho_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/3jbgEgi/zesodisegirinewebebi.pdfIn PDF document text
    • https://cdn.sqhk.co/zakolemafemo/clhfzx0/cheat_game_4x4_off_road_rally_7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455876/normal_5fe1a6a320fb4.pdfIn PDF document text
    • https://cdn.sqhk.co/luzigagoguna/ieOhjZZ/lanilab.pdfIn PDF document text
    • https://mutakisutuw.weebly.com/uploads/1/3/4/7/134768563/xozomuk-vutivurofapinal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422912/normal_5fe24ce697b35.pdfIn PDF document text
    • https://fikijumosoliz.weebly.com/uploads/1/3/5/4/135400707/6df0d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444646/normal_5fe51a47aa591.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404503/normal_600d60ea6ea48.pdfIn PDF document text
    • https://cdn.sqhk.co/livefivepa/iiicJeF/online_backup_storage_uk.pdfIn PDF document text
    • http://galajanexagaj.iblogger.org/perfume_the_story_of_a_murderer_2006_full_movie_in_hindi_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493209/normal_601989bbecaee.pdfIn PDF document text
    • https://cdn.sqhk.co/rapedipular/vq5icF6/mevabu.pdfIn PDF document text
    • https://cdn.sqhk.co/banamasuvaj/lZiahem/nintendo_3ds_games_similar_to_animal_crossing.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/bristol_stool_chart_child.pdfIn PDF document text
    • https://s3.amazonaws.com/wovedukevikov/everquest_leveling_guide_project_1999.pdfIn PDF document text
    • http://fefekug.rf.gd/sipiboposuxekilovenaxibu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB9A 5080 bytes
SHA-256: 8b5f7feb2c41805bfc37211df68f376615056a76a5f739903d507880fedb05cf
font_01_sfnt_off0000dcd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD2 10508 bytes
SHA-256: 1087738881fb55497ec13e9929d7a5b8a47c84dbf8b213233574435e53398361
font_02_sfnt_off000100b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100B5 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71